Matthew pabker ismay



{No.ModeL) I y M. P. ISMAY ,7&8

AlPARATU's P08 80MIN@ PHO TOGRAPHIG IlLfsmxrzs.

] Patented Peb. 8, 1887,

v5o accidental niark on the back'of Unire 'STATES nranr MATTHEW ,PARKER sMAY, F NnWoAs'rLEUPoN'rYn-n, ANDEDWN Dones, or Low FELL, GATEsnnAD, ENGLAND APPARATUS Fon comme Pl-oToeRAPi-nc PLATES.

`FJF'IESCILlICllliON forming part of Letters Patent No. 357,483. dated February 8, 188'?.`

Application filed August 30, ISSG. 'Serial No. 212,252.

(Nomodel.)A Patented in England July 9, 1886, No. 8,972.

r .Great Britain and Ireland, and residing, re*

speetively, MATTHEW PARKER IsMAY, at 1 Sydenhain Terrace, Newcastle upon Tyne, England, and EDWIN Dones, ab 5 Church ltoad, Low Fell, GatesheadVEngland, have invented certai n` Improvements in Apparatus yfor Coating PhotographiePlates, (for which I have applied for a patent in Great Britain, No. 8,972, on the 9th ofJuly, 1886,) of which the following` is a specification.

The object of this invention is to provide improved apparatus by means of which,'-when glass or other plates are coated with gelatine emulsion or other fluid, the coating material is prevented from getting on the back or under side of the plates.

In carrying out this invention, we will proceed to describe it, with reference to the ae- `eoinpanying drawings, in which- Figure I is a longitudinal section of-a preferred form of our improved apparatus. Fig.

II is a plan view thereof with the coatingtrongh and weighted roller removed, and showing the wheels provided with kniieedges. Fig. III is a eross-section of a modified i'orm of the device.

The plates to be coated, instead of being carried on n traveling belt under the vessel containing the coating material, as heretofore, are caused to travel along rails, as shown in Fig. III, or, we prefer, over wheels, as .shown in Figs. I and 1I, the plates being arranged with their contiguous edges in Contact and the forward plates being driven along the rails or over the wheels by the succeeding the plates, through which little or none of the coating material can pass.

W here rails are employed, as' shown in the transverse section, Fig. III, they are provided with lzniieedges a', upon which the plates b are supported. The rails A. are arranged at y such a distance apart that the plates'are supported by the kniieedges n', ns near as may be to the edges of thesaid plates, so that any the plate is plates, thus insuring very close joints between .the forward plates are propelled or caused to slide therealong by the succeeding plates',

whereby close joints are insured between the contiguous edges ofthe plates, and material thus them. v

In Figs. I and 1I is represented an apparatus wherein wheels are employed instead of the coating prevented from passing between vrails to support the plates b while being coated.

The wheels a may be tted, as shown, to rotate in water, spirit, or otherliquid contained in a trough or vessel or troughs or vessels d, so that any chance drops ofelnnlsion or coating material which may fall onto the wheels or onto their bearings e are at once washed oit'. The wheels 7 5 may be provided with knife'edges or needlepoints,0r with teeth, as shown, upon which the plates rest. In order to insure the rotation of the wheels as the plates pass over them, they may be attached to eylindersf, arranged to iioat in the liquid contained in the trough or troughs d, and so that they are pressed up against the plates; to the plates by means oflevcrs or springs o r their equivalent. The .plates may be conducted onto the wheels a beneath the trough /1,containing the coating material, by means oi' an endless traveling belt, t, and whilebeiug coated they are propelled along or over the wheels bythe pressure of subsequent plates onto a setting or cooling table or endless band, k, provided with points or 'teeth Z, upon which the plaies rest, and which help to keep the back of the said plates clean. A weighted roller, m, may be caused to press on the plates to prevent the feeding endless belt t' from slipping beneath the plates as they are being fed or they maybe pressed up toward the toothed supporting-wheels a or the .knife-edges c.

, Having new particuarlydescribed and as- 2 esmas eertained the nature of our invention und in what manner the sume is to be performed, we declare that what We claim is- 1., In en apparatus for the reception and support of glass or other plates While heingeoated with gelatine emulsion or other fluid, means for supplortingthe plates, having projections upon which the plates .inipinge, and troughs or grooves oontni ning nelennsing-liquid in con 1o junction with said supports, substantially us und for the purposes set fort-h.

2. In apparatus for the reception of glass or other plates while being coated with gelatine emulsion or other eoating-i`mid, wheels upon the flanges or rims of which the plates eresupor rims of which the plates are caused to trzrvel, l

of a trough or troughs containing liquid, in which trough or troughs said wheels are mounted, substantially us und for the purposes set forth.

4. In apparatus forcoating glass plates with ,upon which they are caused to tra-vel, having suitable ineens by'which said wheels are eush ioned, so as to maintain the wheels in Contact with the plates, substantially as hereinbefore described.

5. The receiving-table or endless hand k, provided with teeth vor points Z, onto which the coated. plates pass from the wheels, substantiull y as and for the purpose hereinhefore described. l

6. The combination of the wheels, feedinghund i, and roller m, substantially es and for the purpose hereinbefore described.

In testimony whereof we have signed our nmnes to this specification in the presence of two subscribing witnesses.

MATTHEW PARKER ISMAY. vEDWIN DODDS. 

